Standard shipping times

I was approved yesterday for the Mountain Air oil promotion and the seller does not offer prime shipping. Before I purchased I noticed my receipt date of the merchandise was estimated to be April 26- May 4th, however the seller has already given me a review due date of May 5th I believe. Now, if the product arrives on the earlier side of that estimation I'll be OK but if it arrives late what do I do then? I don't want to get a negative score for a late review on here but it's not worth losing my reviewing privileges all together on Amazon to me. Thanks for all your help.
Jess

Hello, Jessica. It says that your Final review verification date is 05/06/2016. In case the product does not arrive by April 26th (even though it says it will arrive between April 26th and May 4th), you can contact us and we will extend the time for posting a review. In case you have any further concerns or questions, feel free to contact us and keep us informed of the situation. Kind regards, Miranda.